Characteristic Curves
These are representative measurements for the TR5270 LED product. Actual curves will vary slightly for the various
radiant flux and dominant wavelength bins.
Relative Intensity vs. Forward Current
200%
100%
Relative Light Intensity Vs Junction Temperature
95%
90%
85%
80%
75%
70%
Relative Light Intensity
150%
125%
100%
75%
50%
25%
0%
0
62.5
125
187.5
250
Relative Light Intensity
175%
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Wavelength Shift vs. Forward Current
Dominant Wavelength Shift (nm)
Dominant Wavelength Shift (nm)
3
2
1
0
-1
-2
-3
0
62.5
125
187.5
250
6
5
4
3
2
1
0
-1
-2
Dominant Wavelength Shift Vs Junction Temperature
25
50
75
100
125
150
If (mA)
Junction Temperature (°C)
Forward Current vs. Forward Voltage
200
175
0
-0.050
Voltage Shift Vs Junction Temperature
If (mA)
125
100
75
50
25
0
0
1
2
3
4
Voltage Shift (V)
150
-0.100
-0.150
-0.200
-0.250
-0.300
-0.350
-0.400
25
50
75
100
125
150
Vf (V)
Junction Temperature (°C)
Copyright © 2011 Cree, Inc. All rights reserved. The information in this document is subject to change without notice. Cree and the
Cree logo are registered trademarks, and TR and TR5270 are trademarks of Cree, Inc.
Cree, Inc.
4600 Silicon Drive
Durham, NC 27703
USA Tel: +1.919.313.5300
www.cree.com
5
CPR3ET Rev. -
CREE [ CREE, INC ]
